The March 2026 SCU paper (Porritt, Hancock, Grosvenor) analyzing the July 1952 Washington DC UAP wave reveals a crucial operational signature: across 8 days of peak activity (July 22-29), with 10-11 events per day spanning multiple states — radar-visual correlations, jet interceptor engagements, commercial airline crews, ground witnesses — no two events overlapped in time. Reports staggered by hours: New Mexico, Virginia, Alabama, Texas, Colorado one day; Northeast and West Coast the next. The pattern is “strongly consistent with broad geographic coverage but no simultaneous multi-site operations” — consistent with a SMALL NUMBER of craft conducting sequential reconnaissance sorties. UAP reports appeared in 92% of all months 1947-1969. Early period (1945-mid 1950s): overt daylight displays with interactive flight near military installations — possibly “inferential messaging.” Gradual shift to predominantly nocturnal, lower-visibility profile — consistent with adaptive response to US interception attempts. Overall conclusion: “a permanent, low-level presence of technologically superior NHI” — small, mobile reconnaissance force with a likely permanent Earth-based operational base.